The journey to crafting our Lunar Reign Sapphire Ring began with a state of awe. With over a century of exploring some of the world's most exquisite gemstones, B.P. de Silva Gem Specialists curate only the ones that take their breath away - and this rare, natural Star Sapphire , is one of them. CRAFTSMANSHIP DETAILS: Main Gemstone: Approx. 5.06ct Star Sapphire cabochon. Surrounding Gems: Approx. 1.30ct Round Diamonds. Exquisitely crafted in 18K Gold (Rose). Click here to view our size guide.